The relationship shown in the table varies directly. What is the missing amount? 8 20
20
8
12
32
50

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?